We all at one time or another have experienced some sort of knee discomfort. Symptoms develop from every-day wear and tear on our body, overuse and injury. Knee problems and injury most often happen during sports, recreational activities, home projects and work-related tasks.
The surface of the bones inside of the knee joint is covered by articular cartilage. This helps by acting like a shock absorber similar to a car's when going over bumps in the road.